Micrite is a limestone constituent formed of calcareous particles ranging in diameter up to four μm formed by the recrystallization of lime mud. The term...
4 KB (447 words) - 22:59, 15 October 2023
crystals less than 5 μm (0.20 mils) in length is described as micrite. In fresh carbonate mud, micrite is mostly small aragonite needles, which may precipitate...
72 KB (8,485 words) - 15:26, 13 August 2024
Peloids are allochems that are composed of micrite, irrespective of size, shape, or origin. The two primary types of peloids are pellets and intraclasts...
1 KB (130 words) - 10:43, 16 August 2023
rigid skeletons, and abundant red algae, microbial micrite, and inorganic cement. The microbial micrite worked to trap sediment. One of the most prominent...
59 KB (7,010 words) - 20:16, 16 July 2024
years ago)) of the Late Jurassic epoch. It is formed from ooliths in a micrite (fine grained calcium carbonate) matrix. There are many voids in the stone...
2 KB (174 words) - 15:22, 21 May 2024
limestones are also considered matrix-supported due to the predominance of micrite (as opposed to, for example, macrofossils). Leigh, Sebastian; Hartley,...
1 KB (155 words) - 00:45, 24 July 2023
calcium carbonate (called calcite) accumulated forming lime mud (called micrite) which covered the sea floor. Small particles of sand or organic detritus...
25 KB (3,007 words) - 10:58, 12 October 2024
This means that their textures are similar to that of collophane, or fine micrite-like texture. Phosphatic grains may be accompanied by organic matter, clay...
21 KB (2,488 words) - 20:13, 22 October 2024
size (> 2 mm) Contains carbonate mud (micrite, silt/clay size <63 μm) Fabric supported by carbonate mud (micrite, <63 μm) 10% or more composed of 63 μm...
3 KB (322 words) - 23:08, 8 June 2023
deemed an allochem. The allochems are typically embedded in a matrix of micrite (lime mud) or sparry calcite. Folk, R. L. (1959) Practical petrographic...
1 KB (143 words) - 21:01, 5 September 2024
Automicrite (section 1. Abiotic micrites precipitation)
Automicrite is autochthonous micrite, that is, a carbonate mud precipitated in situ (no transporting) and made up of fine-grained calcite or aragonite...
6 KB (820 words) - 20:48, 23 September 2024
microscopic coccoliths and other fine-grained fossil debris in a matrix of micrite mud. Small amounts of silica were also deposited, mainly from sponge spicules...
11 KB (1,330 words) - 20:37, 5 August 2024
The suffix -sparite is used if the rock has a crystalline matrix, and -micrite if it contains a micritic, or mud-based, matrix. The prefix describing...
11 KB (1,411 words) - 13:40, 30 June 2023
a thin section has uncovered the presence of lithified structures and micrite, present as laminated to clotted with chocolate-brown blebs. These are...
19 KB (1,904 words) - 04:46, 17 June 2024
limestone composed of fossil debris ("bio") and calcium carbonate mud ("micrite"). Most of the fossil debris in chalk consists of the microscopic plates...
22 KB (2,434 words) - 18:19, 31 January 2024
appearance to the Atima limestone (generally consisting of thick-bedded grey micrite), but it does not achieve the thicknesses common to the Atima, probably...
2 KB (157 words) - 05:52, 16 June 2024
They are typically 0.03 to 0.3 mm long and composed of carbonate mud (micrite). Their most common size is 0.04 to 0.08 mm. Pellets typically lack any...
3 KB (424 words) - 13:23, 31 December 2022
texture contrasts with limestone, which is usually a mixture of grains, micrite (very fine-grained carbonate mud) and sparry cement. The optical properties...
27 KB (3,407 words) - 01:34, 19 September 2024
metres (250 ft) Lithology Primary Limestone, sandstone Other Mudstone, micrite Location Region England Country UK Extent Dorset Type section Named for...
4 KB (318 words) - 08:29, 30 May 2024
is composed of two beds of calcareous shale, divided by a bed of micrite. The micrite bed displays rigid body displacement with roof thrusts and ramp thrusts...
2 KB (213 words) - 01:09, 17 September 2023
three-dimensional shapes of self-assembling micrites examines Platonic solids (regular polyhedral). The term 'micrite' was created by DARPA to refer to sub-millimeter...
40 KB (4,429 words) - 13:40, 9 October 2024
Member is typically 11 to 16 m thick and largely consists of marls and micrites with interbeds of calcareous mudstone. The Ridgeway Member is about 3 to...
11 KB (455 words) - 12:02, 18 October 2024
The group largely comprises limestones, including biosparite and cherty micrite but also some subordinate mudstones, siltstones and dolomites. Basaltic...
4 KB (274 words) - 04:11, 1 September 2024
Portlandian — generally composed of 35 m of well-bedded cryptocrystalline micrites — takes up the major part of the anticline. Its grey to yellowish, sometimes...
9 KB (1,320 words) - 07:19, 10 September 2021
plattenkalk (a very fine-grained limestone that splits into thin plates, usually micrite) that extends through the Swabian Alb and Franconian Alb in Southern Germany...
12 KB (1,461 words) - 23:48, 16 July 2024
more homogenised and settle out as fully marine flint-bearing calcareous micrites. During the Maastrichtian, a regression commences. After the initial deposition...
48 KB (6,285 words) - 14:05, 21 May 2024
formed between the large coral patch reefs are documented by micrite and partially leached micrite. The Tafraout Group covers most of the W High Atlas, surrounded...
105 KB (6,158 words) - 20:23, 30 October 2024
southern Karawanks of Austria. They are composed of interlayered cherts and micrites separated by irregular, non-planar bedding surfaces. The cherty horizons...
19 KB (2,513 words) - 13:20, 3 May 2024
fossilized specimen has calcispar walls with the inner chambers filled with micrite. The walls are raised because the calcispar does not erode as easily. C...
3 KB (338 words) - 22:15, 29 October 2024